EP 3975446 A1 20220330 - DEVICE AND METHOD USING ADAPTIVE CODEBOOK FOR DUAL BEAMFORMING FEEDBACK AND WIRELESS COMMUNICATION SYSTEM INCLUDING THE SAME
Title (en)
DEVICE AND METHOD USING ADAPTIVE CODEBOOK FOR DUAL BEAMFORMING FEEDBACK AND WIRELESS COMMUNICATION SYSTEM INCLUDING THE SAME
Title (de)
VORRICHTUNG UND VERFAHREN UNTER VERWENDUNG EINES ADAPTIVEN CODEBUCHS FÜR DOPPELSTRAHLFORMUNGSFEEDBACK UND DRAHTLOSKOMMUNIKATIONSSYSTEM DAMIT
Title (fr)
DISPOSITIF ET PROCÉDÉ UTILISANT UN LIVRE DE CODES ADAPTATIF POUR DOUBLE RÉTROACTION DE FORMATION DE FAISCEAU ET SYSTÈME DE COMMUNICATION SANS FIL LES COMPRENANT
Publication
Application
Priority
- US 202063083411 P 20200925
- KR 20200174101 A 20201214
Abstract (en)
A beamformee device includes a channel estimator, first and second beamforming matrix providers and a dimension reduction unit. The channel estimator receives a NDP through a channel, and obtains channel information of the channel based on the NDP. The first beamforming matrix provider provides wideband beamforming matrices based on the channel information. The dimension reduction unit generates equivalent channel information based on the wideband beamforming matrices. The second beamforming matrix provider provides beamforming matrices based on the equivalent channel information. The wideband beamforming matrices and the subcarrier beamforming matrices are fed back to the beamformer device. Any one or any combination of the plurality of wideband beamforming matrices and the plurality of subcarrier beamforming matrices are selected from codebooks.
IPC 8 full level
H04B 7/06 (2006.01)
CPC (source: CN EP US)
H04B 7/0617 (2013.01 - CN US); H04B 7/0621 (2013.01 - EP); H04B 7/0636 (2013.01 - EP); H04B 7/0639 (2013.01 - US); H04B 7/0658 (2013.01 - EP); H04B 7/066 (2013.01 - EP); H04L 25/021 (2013.01 - US); H04W 16/28 (2013.01 - CN); H04W 84/12 (2013.01 - US)
Citation (search report)
- [IA] US 2019372638 A1 20191205 - LEE WOOK BONG [US], et al
- [A] EP 3637633 A2 20200415 - MEDIATEK SINGAPORE PTE LTD [SG]
- [A] WO 2020094098 A1 20200514 - HUAWEI TECH CO LTD [CN]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3975446 A1 20220330; CN 114257279 A 20220329; US 11387877 B2 20220712; US 2022103217 A1 20220331
DOCDB simple family (application)
EP 21194521 A 20210902; CN 202111130793 A 20210926; US 202117372750 A 20210712